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Old 07-05-2014, 08:27 PM   #1
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trying to figure out voltage out of receptacles when connected to house power

wondering if anybody had this issue it seems I'm only getting a 105 volt out of the countertop GFI and refrigerator receptacle. am I missing something?thanks in advance
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Old 07-05-2014, 08:33 PM   #2
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That's a little low - your A/C will not be happy with voltage that low. What does the voltage measure at the pedestal / shore power without draw?
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Old 07-05-2014, 09:26 PM   #3
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well I'm an electrical contractor and this was an extension cord from my garage. it is showing 118v +- 1% the ac was on and seemed to be working fine. what got me thinking about it was when I switched the fridge to electric it was not coming on. the trailer was running out of the 120v adaptor tomorrow I will hook it up to the 30amp receptacle and see if it makes a difference. I am now thinking that's what is was.
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Old 07-05-2014, 09:27 PM   #4
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not enough voltage for the ac and the fridge out of the 120 adaptor.....
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Old 07-07-2014, 12:18 PM   #5
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So I can't run my MIG welder with the AC on ??
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Old 07-07-2014, 12:36 PM   #6
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I would say no on the welder and maybe an electric toothbrush
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Old 07-14-2014, 09:44 AM   #7
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wondering if anybody had this issue it seems I'm only getting a 105 volt out of the countertop GFI and refrigerator receptacle. am I missing something?thanks in advance
If the power at the post is good and not at the outlets in your trailer...
1. Age of trailer considered, take a look at the plug on the end of your power cord.
2. Any deformity of the plastic or discoloration on the terminals.
3. If you are hooked up and what you usually run on AC is on, are you feeling heat on the last foot of the cord to where it is plugged in?
4. You may be a candidate for a new plug on your cord.
5. I always reccommend a plug in voltmeter to stay in the most obvious outlet, so you know what you got. Watch it as you turn stuff on in the TT and you'll see the voltage drop. Know when to divert refer and water heaters to propane or shut stuff off
6. State park where I go is bad with providing good power in summertime with high temps and lot of people using the AC
7. The member who said AC < 105 volt will do your AC damage is right on
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Old 07-14-2014, 11:14 AM   #8
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I ended up putting in a dedicated 30amp circuit at my house last year. Used #8 wire from the distribution panel in the basement. Now I have a mobile mother-in-law apartment
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Old 07-14-2014, 11:23 AM   #9
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What size and length extension cord?
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Old 07-14-2014, 11:53 AM   #10
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I ended up putting in a dedicated 30amp circuit at my house last year. Used #8 wire from the distribution panel in the basement. Now I have a mobile mother-in-law apartment
I had now idea they made mile long power supply cables for TT.........I'm gonna have to get one of those............
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Old 07-14-2014, 01:10 PM   #11
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If you are running an extension cord from your house 120VAC receptacle it should be a 10 GAUGE (10-3) HD duty extension cord (you may be able to use a 12-GAUGE 12-3 - DO nOT go smaller than 12-gauge). Then you must have a RV30A-15A Adapter on the end of this extension cord to plug your trailer 30AMP shore power cable into it with. This adapter must be one the long dog-bone type cable. When i used the small round one they always go hot on me.

You need to use a good AC VOLTMETER and ,measure the 120VAC receptacle at the house. The measure again inside the trailer when you are connected up.

This NO SHOCK ZONE photo is good one to follow on how to measure your 15/20AMP receptacle in the house.



This is the RV 120VAC meter I use to plug into a receptacle inside the trailer. This meter has a SAFE ZONE painted in GREEN. If the AC VOLTAGE is outside this safe zone I will not turn on my trailer air conditioner


This is what I do to watch my 120VAC power coming from my garage...

You DO NOT want the connections to get hot and burn up your plugs like this photo shows...


Just my thoughts here
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Old 07-14-2014, 02:54 PM   #12
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I ended up putting in a dedicated 30amp circuit at my house last year. Used #8 wire from the distribution panel in the basement. Now I have a mobile mother-in-law apartment
Ditto on the camper terminal in the backyard, but it is my man cave when family comes to visit and it gets a little too noisy in the big house.
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Old 07-14-2014, 06:24 PM   #13
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ya I agree... I figured it out by the way. I had an adapter hooked up with only 20amp available. when I hooked up to 30amp power every was normal. I made a wind up #8 wire roll for my garage with a receptacle for the TT. (i'm an electrical contractor ) so every thing is good.



but I agree gotta be in the safe zone
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